Granted Patent
Utility
US 6,462,103 · App. 09/682,757
Formation of three dimensional burls in a filled acrylic solid surface material
Inventors:
Carl P. Beitelshees, Rolf Weberg, Shitong Sherry Zhu, Elizabeth R. Walter
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Oct 15, 2001
Inventors
Carl P. Beitelshees
Rolf Weberg
Shitong Sherry Zhu
Elizabeth R. Walter
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.